Suzuki RA410 Manual page 405

6E1-40 ENGINE AND EMISSION CONTROL SYSTEM
TABLE B-5 EGR SYSTEM CHECK
TERMINAL ARRANGEMENT OF ECM/PCM CONNECTOR (VIEWED FROM HARNESS SIDE)
C11 C10
STEP
1 1) Check EGR system, referring to
SYSTEM INSPECTION of EGR SYS-
TEM in this section.
2) Is it in good condition?
2 1) Check vacuum hose, EGR valve and
EGR back pressure transducer, refer-
ring to EGR PRESSURE TRANS-
DUCER AND EGR VALVE of EGR
SYSTEM in this section.
2) Is it in good condition?
3 1) Check EGR solenoid vacuum valve,
referring to EGR SOLENOID VAC-
UUM VALVE of EGR SYSTEM in this
section.
2) Is it in good condition?
5
1
C1
ACTION
3
2
: 7
: 8
YES
EGR system is in good condition.
Go to step 3.
"Y" wire open
"B/R" wire open
"Y" wire shorted to ground or
power circuit
Poor EGR solenoid vacuum
valve connector connection
Poor "C10" terminal connection
If wire and connection are OK,
substitute a known-good ECM/
PCM and recheck.
9
4
B/R
A1
6
Y
C10
B
C11
B
A13
B/Br
1. EGR valve
C1
2. EGR back pressure
transducer
3. Solenoid vacuum valve
4. ECM/PCM
5. MAP sensor
6. Sensed information
7. Intake air
8. Exhaust gas
9. To main relay
Go to step 2.
Vacuum hose mis-con-
nection, leakage, clog
or deterioration
Faulty EGR valve
Faulty EGR pressure
transducer
Faulty EGR solenoid vac-
uum valve
A1
A13
NO